We had a great stay at Frank's place. The room was really clean and comfortable. As people have mentioned, the bed is quite hard but it wasnt an issue for us. The location is great and there are loads of restaurants and street food available close by. There is also a market a few streets away. We had an amazing tom yam noodle dish at the end of the road where the moto taxi drivers wait.
It is also close to the BTS and there are plenty of buses passing by. There is a great app for the buses called via bus which really helps with all the bus numbers as g/gle maps isn't perfectly accurate with them.
Thanks Frank for a great stay!